Abstract: Objective To investigate the value of ultrasonography in the diagnosis of oblique vaginal septum syndrome （OVSS） and postoperative follow-up. Methods The clinical data and ultrasound presentation of eight patients with OVSS were retrospectively analyzed to identify the ultrasound features of OVSS. Results The eight patients with OVSS reported progressive dysmenorrhea （7 cases）, foul-smelling odor of vaginal discharge during menstruation （3 cases）, prolonged menstruation （3 cases）, and lower abdominal pain with anal bulge （3 cases）. Of them, 2 cases （25%） were type Ⅰ, 5 cases （62.5%） were type Ⅱ, and 1 case （12.5%） was type Ⅲ. Seven cases had double uterus and double cervix deformities, and 1 case had complete mediastinum uterus. The location of the diastasis was on the right side of the uterus in 4 cases, and on the left side of the uterus in 4 cases. There were 6 cases of cervicovaginal fluid and 1 case of intrauterine fluid. All of the 8 cases were accompanied by renal agenesis on the side of the diastasis. All cases were confirmed by surgical pathology. No fluid in the uterine cavity, cervical canal, or vagina was found in the postoperative follow-up, and the clinical symptoms were significantly relieved, and one case became pregnant and delivered. Conclusion Ultrasonography is the preferred diagnostic method for OVSS and is valuable in the treatment and postoperative follow-up of this disease.

Key words: Oblique vaginal septum syndrome, Ultrasonography, Diagnosis